Capitalized environmental expenditures depreciation period.

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- Definition

Concentration risk number of major customers.

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- Definition

Notional amount of utility contracts.

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- Definition

Number of foreign subsidiaries.

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No definition available.

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- Definition

Tax benefit recognized threshold limit percentage.

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No definition available.

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- Definition

Volume derivative contract.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

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-Article 5

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-Section 45

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- Definition

The aggregate costs of keeping the property in good condition but that do not appreciably prolong the life or increase the value of the property.

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-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.2)

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

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Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

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-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (b)

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- Definition

The percentage of LIFO (last in first out) inventory to total inventory as of the balance sheet date if other than 100 percent.

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No definition available.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable.

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-Number 210

-Section 03

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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-Topic 985

-SubTopic 20

-Section 50

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-Topic 730

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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014 Customer Subsidiary	Dec. 31, 2013 Customer	Dec. 31, 2012 Customer	Dec. 31, 2011
Summary Of Significant Accounting Policy [Line Items]
Ownership percentage	80.00%
Cash and cash equivalents	$ 85,215,000	$ 133,347,000	$ 76,875,000	$ 84,099,000
Single customer comprised more than 10 percent of the Company's consolidated net sales	0	0	0
Bad debt allowance	4,625,000us-gaap_ProvisionForDoubtfulAccounts	719,000us-gaap_ProvisionForDoubtfulAccounts	314,000us-gaap_ProvisionForDoubtfulAccounts
Percentage of LIFO Inventory	67.00%us-gaap_PercentageOfLIFOInventory	64.00%us-gaap_PercentageOfLIFOInventory
Cost of maintenance and repairs	55,923,000	48,683,000	45,072,000
Total research and development expenses	27,236,000us-gaap_ResearchAndDevelopmentExpense	28,782,000us-gaap_ResearchAndDevelopmentExpense	28,032,000us-gaap_ResearchAndDevelopmentExpense
Capitalized Environmental expenditures depreciation period	10 years
Indefinite-life intangible assets	0
Number of foreign subsidiaries	1scl_NumberOfForeignSubsidiaries
Natural Gas [Member]
Summary Of Significant Accounting Policy [Line Items]
Volume in derivative contract	1,600,000
Purchased Contract Price	6,558,000
Building [Member]
Summary Of Significant Accounting Policy [Line Items]
Lives used for calculating depreciation expense	30 years
Building Improvements [Member]
Summary Of Significant Accounting Policy [Line Items]
Lives used for calculating depreciation expense	15 years
Polymers [Member]
Summary Of Significant Accounting Policy [Line Items]
Bad debt allowance	2,388,000
Minimum [Member]
Summary Of Significant Accounting Policy [Line Items]
Percentage of Tax benefit recognized	50.00%
Minimum [Member] \| Machinery and Equipment [Member]
Summary Of Significant Accounting Policy [Line Items]
Lives used for calculating depreciation expense	10 years
Minimum [Member] \| Furniture and Fixtures [Member]
Summary Of Significant Accounting Policy [Line Items]
Lives used for calculating depreciation expense	5 years
Minimum [Member] \| Vehicles [Member]
Summary Of Significant Accounting Policy [Line Items]
Lives used for calculating depreciation expense	3 years
Minimum [Member] \| Computers Equipment And Software [Member]
Summary Of Significant Accounting Policy [Line Items]
Lives used for calculating depreciation expense	3 years
Maximum [Member] \| Machinery and Equipment [Member]
Summary Of Significant Accounting Policy [Line Items]
Lives used for calculating depreciation expense	15 years
Maximum [Member] \| Furniture and Fixtures [Member]
Summary Of Significant Accounting Policy [Line Items]
Lives used for calculating depreciation expense	10 years
Maximum [Member] \| Vehicles [Member]
Summary Of Significant Accounting Policy [Line Items]
Lives used for calculating depreciation expense	5 years
Maximum [Member] \| Computers Equipment And Software [Member]
Summary Of Significant Accounting Policy [Line Items]
Lives used for calculating depreciation expense	10 years
Demand Deposits [Member]
Summary Of Significant Accounting Policy [Line Items]
Cash and cash equivalents	8,400,000
Non U S Subsidiaries [Member]
Summary Of Significant Accounting Policy [Line Items]
Cash and cash equivalents	$ 76,800,000